So show creator Matthew Weiner would not approve of loose lips? "He would kill me. Pretty much," said Shipka.

On Tuesday, Weiner made headlines when he dismissed some fan complaints about the new season while speaking at a panel at the Paley Media Center.

"There's not enough agency advertising. There's too much advertising," Weiner said, according to the Associated Press. "There's not enough Betty. There's too much Betty. Who is Megan? Why isn't there more Megan?"